Fracture patterns in cleft orthognathic surgery. A cross-sectional study

Authors

  • Ércio Júnior Montenegro de Andrade Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo (HRAC/USP). Bauru, Brazil. https://orcid.org/0000-0001-9897-3983
  • Isabela Toledo Teixeira da Silveira Faculty of Dentistry of Bauru, University of São Paulo, Department of Surgery, Stomatology, Pathology and Radiology. Bauru, Brazil. https://orcid.org/0000-0001-6256-2189
  • Bhárbara Marinho Barcellos Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo (HRAC/USP). Bauru, Brazil. https://orcid.org/0000-0002-8454-8369
  • Luciano Reis de Araújo Carvalho Faculty of Dentistry of Bauru, University of São Paulo, Department of Surgery, Stomatology, Pathology and Radiology. Bauru, Brazil. https://orcid.org/0000-0002-8485-6222
  • Renato Yassutaka Faria Yaedú Faculty of Dentistry of Bauru, University of São Paulo, Department of Surgery, Stomatology, Pathology and Radiology. Bauru, Brazil. Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo (HRAC/USP). Bauru, Brazil. https://orcid.org/0000-0002-2576-7887

DOI:

https://doi.org/10.21142/2523-2754-1202-2024-194

Keywords:

orthognathic surgery, bilateral sagittal osteotomy of the mandibular ramus, cleft lip and palate, orofacial clefts

Abstract

Objective: This study aims to identify fracture patterns on the lingual aspect of the mandible following Bilateral Sagittal Osteotomy of the Mandibular Ramus and correlate these patterns with mandibular anatomical characteristics in patients with cleft lip and palate. Methods: Two hundred cone beam CT scans were analyzed, with 100 scans in the preoperative period to assess mandibular anatomy and 100 in the postoperative period to evaluate the course of fractures on the lingual surface after surgery. Results: Statistical analysis revealed no correlation between the depth of the mandibular fossa and the type of fracture after bilateral sagittal osteotomy. Similarly, there was no association between the height and angle of the mandibular body and the type of fracture. The most common fracture type observed was the type 3 pattern, characterized by a line running through the mandibular canal. Furthermore, no relationship was identified between the studied anatomical aspects and the occurrence of undesired fractures. Conclusions: The anatomical data presented in this study can assist surgeons in selecting the safest surgical techniques and optimal osteotomy sites, particularly in patients with cleft lip and palate.

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Published

2024-06-30

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Section

Original Articles